我国煤炭行业全要素生产率变动的实证研究

Empirical Study on Change of Total Factor Productivity of Coal Industry in China

应用基于DEA的非参数Malmquist指数法对2001—2008年我国27个省(直辖市、自治区)煤炭行业的全要素生产率进行计算,并将其分解为技术进步指数和技术效率指数,对变动原因进行分析。研究结果表明:我国煤炭行业的整体技术效率水平较低,但发展趋势良好;2001—2008年期间全国煤炭行业全要素生产率平均增长率为0.6%,增长主要来自于技术效率的提高,而技术进步的贡献较小;东部、中部、西部地区煤炭行业的全要素生产率变动及其原因存在较明显的差异。最后,给出提高我国煤炭行业生产率的建议。

Based on the non-parametric Malmquist index method based on DEA,this paper calculates the total factor productivities（TFP）of coal industry in 27 provinces in China during 2001-2008,and then decomposes them into the technological progress index and the technology efficiency index,and discuss the variation reasons for total factor productivities.The main results show as follows：the average level of technology efficiency of coal industry is low,but is increasing gradually;the average increasing rate of TFP is 0.6%,technology efficiency progress contributes most to the improvement of TFP,and the contribution of technological progress is small;there exist obvious differences in the variation of TFP and the variation reason among eastern,central and western regions.Finally,it gives some recommendations for improving TFP of coal industry.